code: def replace_arguments(config, world_size):
      return {
          # 1. reduce hidden size
          "attention.dim": config.dim // world_size,
          # 2. reduce number of heads
          "attention.n_heads": config.n_heads // world_size,
      }
  
file_path: parallelformers/parallelformers/policies/distil_bert.py
imports: from transformers.models.distilbert.modeling_distilbert import TransformerBlock
  from parallelformers.policies.base import Layer, Policy
  from parallelformers.utils import AllReduceLinear
label_desc: Use image node_id 1 for calling the DistilBertPolicy obj's underlying member method code with example usage: obj.replace_arguments(config, world_size) and returns: dict